/ Dictionary / Index H hendecagon: Meaning and Definition of Find definitions for: hen•dec•a•gon Pronunciation: (hen-dek'u-gon"), [key] — n. a polygon having 11 angles and 11 sides. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hendeca- hendecahedron Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language